Basically, the possibility of Bitcoin getting ATH is very big. We know that the halving years made Bitcoin mining even more difficult. And we know that mining costs are not small. I am sure that going forward, with Bitcoin being difficult to mine, it will make changes to the interest and price of BTC.
But, don't easily believe this theory. Because everyone has a different view.

thats also a turn off to some people if they found out that difficulty increases to btc and they will stop supporting btc but that was only on the mining side. there are still many ways to get btc easily so the potential for the btc to reach its all time high is still there .
listen mate the difficulty problems you explained above caused by halving is not a theory but its a fact and its also true that experts and lost of users believe that price will skyrocket after the halving .
Difficulty is not seems the issue since it never been talk in any articles since provably investors and real supporters knows on how they can yield their investment on the top crypto in the world. But try to see the current status of bitcoins right now the price is slowly rising up since it creates a hype after the halving and already it gain trust since even if there's a crisis the price still pumping up and for sure investors loves to see that.